Stripper guide for rolling mills



NOV. 1l, 1952 A J, PElLA 2,617,320

STRIPPER GUIDE FOR ROLLING MILLS Filed Sept. 30, 1948 2 SHE EEEEEEEE ET1 Nov. 11, 1952 A, J, PEM 2,617,320

STRIPPER GUIDE FOR ROLLING MILLS Filed Sept. 50, 1948 2 SI-IEETS--SHEET2 Patented Nov. 11, 1952 UNITED STATES PATENT OFFICE STRIPPER GUIDE FORROLLING MILLS Anthony J. Peila, West Vandergrift, Pa.

Application September 30, 1948, Serial No. 51,885

2 Claims. (Cl. 80-51) This invention relates to stripper guides forrolling mills, that is, guides which direct leading edges of stripsemerging from a roll stand away from the lower work roll and ordinarilyto the next stand, instead of permitting strips to follow the contour ofthis roll.

An object of the invention is to provide improved stripper guideswhich-accurately direct strips emerging from the rolls and yet areconveniently movable to an out-ofethe-way position to enable rolls to beinserted or removed from the roll housings.

A further object of the invention is to provide improved stripper guideswhich are latched releasably in an operative position for directingstrips and on release of the latch mechanism gravitate freely to anout-of-the-way position.

In accomplishing these and other objects of the invention, I haveprovided improved details of structure a preferred form of which isshown in the accompanying drawings, in which:

Figure 1 is a top plan view, partly in section, of a roll stand equippedwith an improved stripper guide embodying features of the presentinvention;

Figure 2 is a vertical sectional view of the roll stand and stripperguide taken substantially on line II-II of Figure 1;

Figure 3 is an enlarged isometric View of the latch mechanism; and

Figure 4 is a vertical sectional View through the latch slideway andbar.

Referring more in detail to the drawings:

In Figures 1 and 2 there is shown a roll stand which comprises rollhousings ID, back-up rolls I2 and Work rolls I3. When the roll stand isassembled or dismantled, the rolls and their chocks are inserted orremoved vertically through the upper ends of the housings. The rollstand may be equipped with the usual tensiometer I4 of any standardconstruction. Inasmuch as the foregoing parts are conventional, they arenot shown nor described in greater detail.

The stripper guide of the present invention is supported on the two rollhousings I on the exit side of the stand. This guide comprises a plateI5 xed to a shaft I6. The housings carry axially aligned bearings II alittle below the pass-line of strip S, and these bearings rotatablysupport shaft I6. The plate has an operative position in which it issubstantially horizontal or inclining slightly toward the rolls, asillustrated in full lines in Figure 2. When I refer to the operativeposition of the plate as substantially horizontal I intend thisexpression to include a slightly in- 2 clining position, such as shownin Figure 2. The plate also has an out-of-the-way position, in which itis substantially vertical, as illustrated in dot-dash lines in Figure 2.In the operative position one edge of the plate is close to the lowerwork roll and the plate guides the leading edges of strips S away fromthis roll, ordinarily to the next roll stand. In the out-of-the-wayposition the plate is clear of both the work rolls and the back-up rollsand does not interfere with their insertion or removal vertically. ShaftI6 is situated beyond the center line of plate I5, so that the sectionof the plate between the axis of pivoting and the rolls is heavier thanthe section beyond the axis of pivoting. Therefore the plate tends togravitate to its out-of-the-way position.

One of the roll housings I0 supports latch mechanism for holding plateI5 in its operative position. Figure 3 shows this mechanism in detail.Preferably this mechanism is carried on a U-shaped mounting plate I8welded to the inside of the housing. Plate I8 mounts a second plate I9,which in turn mounts a fixed stop 20 and a vertical slideway 2|. Thelatter carries a vertically movable latch bar 22, one side of which isspaced from stop 20 and the other side of which has a cam face 23. ShaftI6 carries a depending lug 24 which is receivable in the space betweenstop 2II and latch bar 22 for holding the plate in its operativeposition.

A spring 25 within the slideway normally urges the latch bar to itsprojected position (Figure 4). The outer face of the slideway has avertical slot 26 and the latch bar carries a pin 21 which rides in thisslot. The slideway carries a pvot ear 28. A bell crank 29 is pivoted tothis ear and one of its arms has a slotted connection with pin 21. Anoperating handle 30 is joined to the other arm of the bell crank andextends to a position where it may be conveniently grasped by anoperator (Figures 1 and 2).

In operation, whenever it is desired to move plate I5 of the stripperguide to its inoperative position, the operator moves handle 30 to theright as viewed in Figures 1 and 2. This movement rotates bell crank 29counter-clockwise and retracts latch bar 22. When the latch bar is clearof lug 24, plate I5 gravitates to its out-ofthe-way position, in whichit is clear of the rolls. The rolls may then be moved vertically into orfrom the roll housings without interference from the stripper guide. Onrelease of the handle, spring 25 returns the latch bar to its projectedposition. When it is desired to return plate I5 to its operativeposition. the operator grasps the plate and rotates it clockwise untillug 24 reengages latch bar 22 and slides over cam face 23 into the spacebetween the latch bar and stop 20.

From the foregoing description it is seen I have provided an improvedstripper guide which is conveniently moved either to an operativeposition or to an out-of-the-way position. The mechanism is of simpleconstruction and the device facilitates changing rolls over priorstripper guides with which I am familiar.

While I have shown and described only a single embodiment of theinvention, it is apparent that modifications may arise. Therefore, I donot Wish to be limited to the disclosure set forth but only by the scopeof the appended claims.

I claim:

1. A stripper guide for a rolling mill comprising a pair of spacedsupports, a bearing on each of said supports, a at plate pivotallysupported in said bearings for rotation about a horizontal axis andhaving a substantially horizontal operative position and a substantiallyvertical out-of-theway position, a retractable latch bar and a xed stopcarried -by one of said supports, a lug depending from said Dlate andbeing receivable between said latch bar and said stop for holding saidplate in its operative position, and means for retracting said latchbar, the section of said plate on one side of its axis of rotation beingheavier than the section on the other side so that said plateautomatically gravitates about this axis to its out-of-the-way positionon retraction of said latch bar,

2. A stripper guide for a rolling mill comprising a pair of spacedsupports, a bearing on each of said supports, a flat plate pivotallysupported in said bearings for rotation about a horizontal axis andhaving a substantially horizontal operative position and a substantiallyvertical out-of-the- Way position, a slideway and a fixed stop carriedby one of said supports, a retractable latch bar slidably mounted insaid slideway and being spaced from said stop, a spring normallyprojecting said latch bar, a lug depending from said plate and beingreceivable between said latch bar and said stop for holding said platein its operative position, and means for retracting said latch bar, thesection of said plate on the side of its axis toward said xed stop beingheavier than the section on the side toward said latch bar so that saidplate automatically gravitates to its outof-the-way position onretraction of said latch bar.

ANTHONY J. PEILA.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 809,310 Long Jan. 9, 19052,469,169 Markle May 3, 1949 2,495,250 Gilly Jan. 24, 1950 FOREIGNPATENTS Number Country Date 623,107 Germany 1 Nov. 28, 1935 654,329Germany Aug. 24, 1935

